Copper tube bending pliers



mg, 2, W49. A. w. ENGBERG 2,477,727

COPPER UBE BENDING PLIERS Filed June 12, 1947 Patented Aug. 2, 1949UNITED STATES ATENT OFFICE 1 Claim. 1

This invention relates to a tool of the crosshandle type, the primaryobject of the invention being to provide a tool for bending coppertubing in restricted areas, the tool accomplishing its purpose withoutdistorting or collapsing the tube.

An important object of the invention is to provide a tool of thischaracter including pivoted jaws which may be adjusted to variousangular positions with respect to the handles of the tool, so that thetool may be operated at corners, or at the rear of fixtures or pipes.

Still another object of the invention is to provide means for holdingthe jaws against movement under normal conditions, after the laws havebeen adjusted for use.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts, hereinafter more full describedand pointed out in the claim, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

Referring to the drawing Figure 1 is an elevational view of a toolconstructed in accordance with the invention.

Figure 2 is a plan view thereof.

Figure 3 is a sectional view taken on line 33 of Figure 2.

Figure 4 is a perspective view of one of the jaws which may besubstituted for one of the bending jaws as shown in Figures 1 and 2 ofthe drawing, when it is desired to use the tool as a stud puller.

Referring to the drawing in detail, the tool comprises a pair ofcross-handles 5, the forward ends of the handles being formed into jaws6 which are integral with the handles.

Each of these jaws 6 is provided with a slot 1 extending inwardly fromthe outer end thereof, the slot being designed to accommodate the arms 8of the removable jaws 9 and Hi. The jaws 6 are provided with aligningopenings through which the bolts ll extend, the bolts also passingthrough openings in the arms 8 securing the removable jaws to the jaws6.

In addition to the bolts H, a spring member is provided, the springmember having a detent [3 formed intermediate its ends, to fit into thenotches i l formed in the arms 8, securing the removable jaws in variouspositions of angular adjustment with respect to the handles.

The spring members are formed with ends l that are adapted to fit overthe edges of the jaws 6, as clearly shown by the drawing, therebyholding the springs in position.

As clearly shown by the drawing, the jaw I0 is formed with a curvedrecess of a width to accommodate the usual copper tubing, while the jaw9 is curved to fit within the curved recess, and represents the male jawof the bending tool. This jaw 9 is transversely curved to fit over thecurved surface of the copper tubing to be bent.

It is obvious that when the jaws are positioned against a copper tubing,and the handles are forced together, the jaws will curve or bend thecopper tubing to the desired shape, without the danger of collapsing ordistorting the cylindrical structure of the tubing.

As shown by Figure 4 of the drawing, a removable jaw IB is provided, andthis jaw is formed with teeth 11. An opening 18 is formed in the jaw toaccommodate the bolt II, when the jaws l6 are used to replace the jaws 9and Ill. The jaws l6 are designed primarily for extracting or pullingstuds.

From the foregoing, it will be seen that due to the construction shownand described, I have provided a tool which may be used in bendingcopper tubing, and one wherein the jaws may be adjusted to variousangular positions with respect to the handles of the tool, so that thejaws may be positioned in restricted areas to grip and bend coppertubing.

What is claimed is:

A tube bending tool comprising cross handles, integral jaws formed onthe cross handles, said jaws having slots extending inwardly from theouter ends thereof, removable jaws curved to fit around a tube, armsformed on the removable jaws and disposed within the slots of theintegral jaws, bolts extending through the jaws securing the removablejaws pivotally to the integral jaws said arms having notches formed inthe edges thereof, a spring member fitted within each slot and havingright angled ends engaging the sides of the integral jaws of the crosshandles, said spring members having central offset portions engageablewithin the notches on the removable jaws holding the removable jaws invariable angular positions with respect to the stationary Jaws.

ARTHUR W. ENGBERG.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 638,378 Casterlin Dec. 5, 1899831,356 Kober Sept. 18, 1908 1,141,916 Aderer 1 June 8, 1915 1,445,908Perkins Feb. 20, 1923 2,253,906 Lehman Aug. 26, 1941 FOREIGN PATENTSNumber Country Date 44,706 Switzerland May 5, 1909

